Temporary engine control



June 12, 1934. D 'J DOLAN 1,962,433

TEMPORARY ENGINE CONTROL Filed Sept. 12, 1932 JIALED CARDEL INVENTOR Par/'1 m ATTORNEYS Patented June 12, 1934 UNITED STATES PATENT OFFICE TEMPORARY ENGINE CONTROL Application September 12, 1932, Serial No. 632,778

5 Claims.

This invention relates to protective devices for engines, and more particularly to such a protective device as is adapted for application to the fuel supply pipe of an engine.

A specific example is an internal combustion engine such as found in the automotive field and having its fuel supply pipe in the form of a carburetor outlet and associated inlet manifold, with a joint of bolted flange type therebetween. The protective device contemplated includes a governor part to be inserted at this joint, with a restricted opening whereby to impede flow through the supply pipe. The joint being between the throttle valve, which is a part of the carburetor, and the combustion chambers served by the manifold, the insertion of the governor part limits the maximum flow of carburetor mixture through the engine cylinders, independent of the setting of the throttle.

The principal purpose of such a device in the automotive field is to prevent abuse of an engine, particularly injurious or destructive over-speeding when the engine is new. Such devices are not generally new, and they have found wide employment in the overland delivery of automobiles from manufacturer to dealer or purchaser.

To prevent surreptitious removal and replacement or tampering with devices so employed, it has been found necessary that they be provided with sealing means whereby any interruption to their effectiveness may be detected. It is the principal object of this invention to provide a novel and inexpensive device of the class described.

In commercial use the labor of application and removal becomes of importance, and a further object is to provide that this shall be a minimum.

One of the easiest methods of beating the usual restriction inserted in the described joint of the internal combustion engine fuel supply pipe is to loosen the bolts by which the flanges at the joint are secured together, to allow an inlet of air at the joint, and then change the carburetor adjustment to give an overly rich mixture. This cannot be done if access to the flange bolts be prevented, and to prevent such access without detection is a further object of this invention.

That attention be called to the fact that such a device is attached, and particularly that attention be called to its seal, is a matter important in the hands of the general public and is a further important object of this invention.

The exact nature of this invention together with further objects and advantages thereof will be apparent from the following description taken in connection with the accompanying drawing, in which Figs. 1-3 illustrate one form of the device and Figs. 4-6, another form; and wherein more specifically Fig. 1 illustrates the device as applied to an automobile engine; Fig. 2 is a section as in the plane of line 22, Fig. 1; Fig. 3 is a development of the guard employed; Fig. 4 shows the other form of the device as applied to an engine; Fig. 5 is a section as in the plane of line 5-5, Fig. 4; and Fig. 6 is a development of the guard part.

With reference now to the form of Figs. l-3 of the drawing, 1 represents the inlet manifold of the engine to be protected, 2 represents the carburetor serving the manifold and having the usual butterfly throttle valve controlled by the lever 3. The arrangement of parts is one wherein the manifold is closely adjacent a wall 4 of the engine served, and the form of protective device herein is one particularly adapted for such arrangement.

The carburetor is secured to the manifold by a joint of bolted fiange type. More specifically this joint includes a pair of oppositely disposed flanges 5 on the carburetor, a corresponding pair of flanges on the manifold and bolts 6 arranged in openings in the flanges; this being the usual arrangement and one well known in the art.

This invention includes a governor part 7 and a guard part 8.

The governor part is a piece of sheet material of metal or moisture-proof cardboard or the like. As indicated in Fig. 2 it is of rectangular form, of size to be inserted between the flanges of the joint and between the bolts thereof, with corner parts 9 projecting beyond the flanges. It has one or more relatively small openings as indicated at 10 in the path of flow from carburetor to inlet manifold, whereby flow will be permitted but restricted; and thus the power output and consequently the speed of the engine will be correspondingly limited. The governor part is inserted in the position indicated by loosening of the bolts 6 allowing the carburetor to lower sufficiently to permit entry of the governor part. Thereafter the governor part is secured by tightening of the joint, the bolts 6 being turned down for the purpose.

The principal purpose of the guard part 8 is to thereafter prevent access to the bolt heads. The guard part is similarly of sheet material of a nature, or thin enough, to be flexed. It may be of sheet metal or cardboard or the like. It is provided with openings such as the slots indicated at 11 Fig. 3, to fit over the projecting parts 9 of the governor part '7; and is positioned about the flanges of the joint with its openings 11 disposed upon the projections 9 which thus extend therethrough so that the guard part is vertically positioned in the zone of the flange bolts. As indicated Figs. 1 and 3 the guard part extends above and below the openings 11 sufliciently that access to the bolts 6 is prevented. The lateral extent of the guard part is sufficient that its ends approach close enough to the wall 4 that.

access to the bolts from the sides is prevented. The contours of the upper and lower. edges of the guard part are formed to clear such obstructions as are found on the engine parts adjacent the joint. Thus a concavity 12 is provided to clear the pin upon which the throttle lever 3 is mounted and a concavity 13 is provided to clear the tap 1 1 of the manifold.

That the guard part may be secured in guarding position and there sealed, the projections 9 of the governor part are perforated as at 15 to receive the wire 16 which is disposed about the joint outside the guard part and interwoven in the openings 15 in any convenient manner such as shown Figs. 1 and 2, and which has its ends sealed together by the seal 17.

Obviously once the seal 1'7 is applied the bolts 6 are inaccessible without detection, so that similarly the restriction in the inlet passage cannot be lessened or removed without detection, nor can the joint be loosened to admit air.

The seal 17 is preferably located at the front where it is easily applied and inspected. In such position the face of the guard part 8 provides a nice background for the seal, making the latter conspicuous.

The face of the guard part is obviously nicely adapted to bear advertising or other similar material as indicated, and is preferably attractively colored to call attention to its presence.

With reference now to Figs. 46 of the drawing wherein corresponding parts are indicated by corresponding reference characters, the relation of carburetor 2 to manifold 1, and the joint therebetween, is as before, but there is no engine wall 4 adjacent the parts, which is a condition met in an engine of V type.

Here the governor part 7 is identical with that before described and is secured in the same manner as before.

The guard part 8a, however, must now entirely surround the joint to protect the bolts thereof. It is therefore longer-preferably sufficient to extend entirely about the joint, with an overlap at its ends--and provided with a correspondingly greater plurality of openings 11, six being indicated, to receive all of the four projections 9 of the governor part. For improved appearance it may have the two circular enlargements indicated at 18 disposed so as to present circular faces at the two sides of the engine when positioned about the joint. To so position the guard part it is simply wrapped tightly around the joint, its openings 11 being placed over the projections 9 of the governor part as before described.

Perforations 19 are provided in the guard part, and when the latter is properly positioned a wire 16a is threaded through these perforations and the perforations 15 of the governor part, as in dicated Figs. 4 and 5 or in any other manner to properly secure the parts together. A seal 17a is secured to the ends of the wire 16a, over one of the faces 18 of the guard part.

That the form of guard part 8a may be less in vertical dimension when applied, it is provided with tabs 20 perforated as at 21, these tabs being adapted to be bent down over the heads of the bolts of the joint as upon the dotted lines 22, and bent as at 23 to bring their perforations 21 in registry with corresponding perforations 19 and receive the wires threaded through the latter. Thus the heads of the bolts 6 are entirely protected as indicated Figs. 4 and 5, and a neat appearance is presented.

What I claim is:

1. In an engine having a fuel supply pipe with a joint of bolted flange type, a protective device comprising a governor part adapted to be inserted between the flanges of said joint and there secured by tightening of said joint, and an associated guard part adapted to be disposed adjacent the heads of said bolts to prevent loosening access thereto, one of said parts having an opening and the other having a member cooperative with said opening when the parts are so disposed, and means for sealing said member in said opening.

2. In an engine having a fuel supply pipe with a joint of bolted flange type, a protective device comprising a governor part adapted to be inserted between the flanges of said joint and there secured by tightening of the flange bolts and having a part extending beyond the joint flange when so secured, a guard part adapted to be positioned adjacent a bolt head to prevent loosening access thereto and having an opening to receive said projecting governor part when so positioned, and means for sealing said governor part in said opening, whereby said guard part is positioned by said projecting governor part and secured by said sealing means.

3. In an engine having a fuel supply pipe with a joint of bolted flange type, a protective device comprising a governor part adapted to be inserted between the flanges of said joint and there secured by tightening of the flange bolts and having a plurality of parts extending beyond the joint flange when so secured, a guard part adapted to be positioned about said joint adjacent the heads of said bolts to prevent loosening access thereto and having openings to receive said projecting governor parts when so positioned, and means associated with said projecting governor parts for sealing said guard part.

4. In an engine having a fluid supply pipe with a joint having securing bolt means, a protective device comprising a governor adapted to be inserted at said joint and there secured by tightening of said bolt means, a guard part adapted to be disposed about the joint to prevent loosening access to said bolt means, and said parts having means interassociated to position the guard part by the governor part, and means for sealing said guard part so positioned.

5. In an engine having a fuel supply pipe with a joint of bolted flange type, a protective device comprising a governor part adapted to be inserted between the flanges of said joint and there secured by tightening of the flange bolts and having a plurality of parts extending beyond the joint flange when so secured, a guard part adapted to be positioned about said joint adjacent the heads of said bolts to prevent loosening access thereto and having openings to receive said projecting governor parts when so positioned, and sealing means about said guard part to maintain the latter about said joint.

DAVID J. DOLAN. 

